TabbedPane: support Ctrl+TAB/Ctrl+Shift+TAB to switch to next/previous tab if a child of tabbedpane has focus

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatContainerTest.java

@@ -81,7 +81,11 @@ public class FlatContainerTest
 		JSplitPane splitPane3 = new JSplitPane();
 		JSplitPane splitPane1 = new JSplitPane();
 		JPanel panel10 = new JPanel();
+		JTextField textField2 = new JTextField();
+		JButton button1 = new JButton();
 		JPanel panel11 = new JPanel();
+		JTextField textField3 = new JTextField();
+		JButton button2 = new JButton();
 		JSplitPane splitPane2 = new JSplitPane();
 		JPanel panel12 = new JPanel();
 		JPanel panel13 = new JPanel();
@@ -89,7 +93,11 @@ public class FlatContainerTest
 		tabbedPane1 = new JTabbedPane();
 		JPanel panel1 = new JPanel();
 		JLabel label1 = new JLabel();
+		JTextField textField4 = new JTextField();
+		JButton button3 = new JButton();
 		JPanel panel2 = new JPanel();
+		JTextField textField5 = new JTextField();
+		JButton button4 = new JButton();
 		JLabel label2 = new JLabel();
 		tabbedPane3 = new JTabbedPane();
 		JPanel panel5 = new JPanel();
@@ -145,6 +153,14 @@ public class FlatContainerTest
 					{
 						panel10.setBackground(Color.orange);
 						panel10.setLayout(new FlowLayout());
+
+						//---- textField2 ----
+						textField2.setText("some text");
+						panel10.add(textField2);
+
+						//---- button1 ----
+						button1.setText("...");
+						panel10.add(button1);
 					}
 					splitPane1.setLeftComponent(panel10);
 
@@ -152,6 +168,14 @@ public class FlatContainerTest
 					{
 						panel11.setBackground(Color.magenta);
 						panel11.setLayout(new FlowLayout());
+
+						//---- textField3 ----
+						textField3.setText("some text");
+						panel11.add(textField3);
+
+						//---- button2 ----
+						button2.setText("...");
+						panel11.add(button2);
 					}
 					splitPane1.setRightComponent(panel11);
 				}
@@ -195,6 +219,14 @@ public class FlatContainerTest
 					//---- label1 ----
 					label1.setText("TOP");
 					panel1.add(label1);
+
+					//---- textField4 ----
+					textField4.setText("some text");
+					panel1.add(textField4);
+
+					//---- button3 ----
+					button3.setText("...");
+					panel1.add(button3);
 				}
 				tabbedPane1.addTab("Tab 1", panel1);
 
@@ -202,6 +234,14 @@ public class FlatContainerTest
 				{
 					panel2.setBorder(new LineBorder(Color.magenta));
 					panel2.setLayout(new FlowLayout());
+
+					//---- textField5 ----
+					textField5.setText("some text");
+					panel2.add(textField5);
+
+					//---- button4 ----
+					button4.setText("...");
+					panel2.add(button4);
 				}
 				tabbedPane1.addTab("Tab 2", panel2);
 

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatContainerTest.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.0.0.194" Java: "11.0.2" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.1.0.272" Java: "13.0.1" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -32,12 +32,28 @@ new FormModel {
 						add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class java.awt.FlowLayout ) ) {
 							name: "panel10"
 							"background": sfield java.awt.Color orange
+							add( new FormComponent( "javax.swing.JTextField" ) {
+								name: "textField2"
+								"text": "some text"
+							} )
+							add( new FormComponent( "javax.swing.JButton" ) {
+								name: "button1"
+								"text": "..."
+							} )
 						}, new FormLayoutConstraints( class java.lang.String ) {
 							"value": "left"
 						} )
 						add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class java.awt.FlowLayout ) ) {
 							name: "panel11"
 							"background": sfield java.awt.Color magenta
+							add( new FormComponent( "javax.swing.JTextField" ) {
+								name: "textField3"
+								"text": "some text"
+							} )
+							add( new FormComponent( "javax.swing.JButton" ) {
+								name: "button2"
+								"text": "..."
+							} )
 						}, new FormLayoutConstraints( class java.lang.String ) {
 							"value": "right"
 						} )
@@ -86,12 +102,28 @@ new FormModel {
 							name: "label1"
 							"text": "TOP"
 						} )
+						add( new FormComponent( "javax.swing.JTextField" ) {
+							name: "textField4"
+							"text": "some text"
+						} )
+						add( new FormComponent( "javax.swing.JButton" ) {
+							name: "button3"
+							"text": "..."
+						} )
 					}, new FormLayoutConstraints( null ) {
 						"title": "Tab 1"
 					} )
 					add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class java.awt.FlowLayout ) ) {
 						name: "panel2"
 						"border": &LineBorder0 new javax.swing.border.LineBorder( sfield java.awt.Color magenta, 1, false )
+						add( new FormComponent( "javax.swing.JTextField" ) {
+							name: "textField5"
+							"text": "some text"
+						} )
+						add( new FormComponent( "javax.swing.JButton" ) {
+							name: "button4"
+							"text": "..."
+						} )
 					}, new FormLayoutConstraints( null ) {
 						"title": "Tab 2"
 					} )